I read an article that compares the full flow filter to the cartridge style oil filter.
The full flow spin-on style filters 92% of the oil. The cartridge style filters 87% of the oil. To me, the extra 5% isn't worth the effort to convert it. I'm sure we all follow the old rule of thumb and change our oil and filters at 3000 miles. I doubt there is any actual benefit to the conversion. The engine won't know the difference.
